List<string> NativeFontFamilies()
{
if (nativeFontCollection == null)
{
var collectionOptions = new CTFontCollectionOptions ();
collectionOptions.RemoveDuplicates = true;
nativeFontCollection = new CTFontCollection (collectionOptions);
nativeFontDescriptors = new Dictionary<string, CTFontDescriptor> ();
}
var fontdescs = nativeFontCollection.GetMatchingFontDescriptors ();
foreach (var fontdesc in fontdescs)
{
var font = new CTFont (fontdesc, 0);
// Just in case RemoveDuplicates collection option is not working
if (!nativeFontDescriptors.ContainsKey (font.FamilyName))
{
nativeFontDescriptors.Add (font.FamilyName, fontdesc);
}
}
var fontFamilies = new List<string> (nativeFontDescriptors.Keys);
return fontFamilies;
}
public CTFontCollection(CTFontCollectionOptions options)
{
handle = CTFontCollectionCreateFromAvailableFonts(
options == null ? IntPtr.Zero : options.Dictionary.Handle);
if (handle == IntPtr.Zero)
{
throw ConstructorError.Unknown(this);
}
}
public CTFontCollection(CTFontDescriptor[] queryDescriptors, CTFontCollectionOptions options)
{
using (var descriptors = queryDescriptors == null
? null
: CFArray.FromNativeObjects(queryDescriptors))
handle = CTFontCollectionCreateWithFontDescriptors(
descriptors == null ? IntPtr.Zero : descriptors.Handle,
options == null ? IntPtr.Zero : options.Dictionary.Handle);
if (handle == IntPtr.Zero)
{
throw ConstructorError.Unknown(this);
}
}
public CTFontCollection WithFontDescriptors(CTFontDescriptor[] queryDescriptors, CTFontCollectionOptions options)
{
IntPtr h;
using (var descriptors = queryDescriptors == null
? null
: CFArray.FromNativeObjects(queryDescriptors)) {
h = CTFontCollectionCreateCopyWithFontDescriptors(
handle,
descriptors == null ? IntPtr.Zero : descriptors.Handle,
options == null ? IntPtr.Zero : options.Dictionary.Handle);
}
if (h == IntPtr.Zero)
{
return(null);
}
return(new CTFontCollection(h, true));
}
public CTFontCollection WithFontDescriptors (CTFontDescriptor[] queryDescriptors, CTFontCollectionOptions options)
{
IntPtr h;
using (var descriptors = queryDescriptors == null
? null
: CFArray.FromNativeObjects (queryDescriptors)) {
h = CTFontCollectionCreateCopyWithFontDescriptors (
Handle,
descriptors == null ? IntPtr.Zero : descriptors.Handle,
options == null ? IntPtr.Zero : options.Dictionary.Handle);
}
if (h == IntPtr.Zero)
return null;
return new CTFontCollection (h, true);
}
public CTFontCollection (CTFontDescriptor[] queryDescriptors, CTFontCollectionOptions options)
{
using (var descriptors = queryDescriptors == null
? null
: CFArray.FromNativeObjects (queryDescriptors))
Handle = CTFontCollectionCreateWithFontDescriptors (
descriptors == null ? IntPtr.Zero : descriptors.Handle,
options == null ? IntPtr.Zero : options.Dictionary.Handle);
if (Handle == IntPtr.Zero)
throw ConstructorError.Unknown (this);
}
public CTFontCollection (CTFontCollectionOptions options)
{
Handle = CTFontCollectionCreateFromAvailableFonts (
options == null ? IntPtr.Zero : options.Dictionary.Handle);
if (Handle == IntPtr.Zero)
throw ConstructorError.Unknown (this);
}
